Elastic belt.



W. DALTON. ELASTIC BELT. APPLICATION FILED MAY 22, 1908. RENEWED APR. 28, 1909.

L Patented June '8, 1909.

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fd. V054 j of the belt, but the construction is especially.

UNITED STATE-S PATENT OFFICE.

WILLIAM DALTON, 0F BUFFALO, NEW YORK, ASSIGNQR TO CHARLES DALTON, 0F LIMERICK, A

IRELAND.

ELASTIC BELT.

Specification of Letters Patent.

Patented June 8, 1969.

Application filed May 22, 1908, Serial $10,434,219. Renewed April 28, 1999. Serial No. 492,771.

To all whom it may concern:

Be it known that I, WILLIAM DALTON, a subject of the King of Great Britain, residing at Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Elastic Belts, of which thejfollowing is a specification.

This invention relates more particularly to im rovementsf in elastic or extensible drive elts. which are composed of close spring wire coils. Belts of this character are especially adapted for use upondental engines for connecting the main drive wheel with the pulley on the flexible tool shaft, and for other small machines for transmitting power from one pulley to another where an elastic belt is desired.

-The object of this invention is to construct a belt of this character in which the spring coil is inclosed by; a covering which aifords a better frictional surface so as to increase the tractive power-of the 'belt, and which also protects the spring coil from wear and reduces to a minimum the noise caused by the direct contact of the metal coil with the pulleys.

In the accompanying drawings: Figure l is an elevation of a belt embodying the invention. Fig. 2 is a sectional elevation thereof on an enlarged scale. Fig. 3 is a cross-section thereof, on an enlarged scale.

Like letters of reference refer to like parts in the several figures. g

A represents aclosely wound helix or coil of spring wire which may be of any suitable cross-sectional shape, the size of the wire and the diameter of the coil being dependent upon the'desired size and strength suitable for belts of. relatively small diameters. Y

B represents a covering which'surrounds the spring coil A and consists of a flexible cord 6 of any strong and durable material which is wound closely about the spring coil, preferably in the same direction as the wire of the s ring coil. The vcovering cord 6 is preferal y of' sufliciently greater size than the wire of which the spring coil is formed, so that it cannot work in between reason of'the uneven surface o the coil due to the helical form of the same. The windingsof the covering form a rough outer surface which engages the pulleys and increases the frictional contact of the belt therewith. The wear on the belt is received by this covering and when the latter becomes worn,

it may be readily removed and the icoiln'e' wound. The covering also serves to eliminate the objectlonal buzzing noise'which results when the coiled wire belt is used without any covering.

I claim as my invention:

1. An elastic belt comprising an elastic core, and a coverin therefor consisting of a flexible non-metallic cord wound helically about the same, substantially as set forth.

2. An elastic belt comprising a spring coil, and a coverin therefor consisting of a flexible non-metal ic cord wound helically about said spring coil, substantially as set forth.

3. .An elastic belt comprising a spring coil, I

and a covering therefor consisting of a flexible non-metall1c cordwound helically about said. spring coil in the same direction as the convolutions of said coil, substantially as set forth.

4'. An elastic belt comprising a spring wire coil, and a covering therefor consisting of a flexible cord of greater size than the wire of said spring coil, which is wound helically about said coil, substantially as set forth.

Witness my hand, this 9th day of May, 908.

WILLIAM DALTON,

Witnesses:

' E. C. HARD,

'C. B. Honmmox. 

